Answer:
Efficiency of the pulley system is 66.7 %
Explanation:
It is given that,
Input force, [tex]F_{in}=500\ lb[/tex]
Distance, d₁ = 2 feet
Output force, [tex]F_{out}=50\ lb[/tex]
Distance, d₂ = 30 feet
The efficiency of pulley system is defined as ratio of output work done to the input work done i.e.
[tex]\eta=\dfrac{W_{out}}{W_{in}}[/tex]
[tex]\eta=\dfrac{500\times 2}{50\times 30}\times 100[/tex]
[tex]\eta=66.7\%[/tex]
Hence, the efficiency of the pulley system is 66.7 %
